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F. WIERZBOWSK.. I FIREABRICK TRIMMING OR BEVELING MACHINE.

APPLICATION FILED SEPT. 7. I920.

Patented July 5, 1921.

3 SHEETS-SHEET 1 IIII I I J A n l I l l I I I I I III F. WIERZBOWSKI'. FIRE BRICK TRIMMING OR BEVELING MACHINE.

APPLICATION FILED SEPT- 7. 1920,.

Patented J u'ly 5, 1921.

I 61 2 n mm 2 n M m z s W T u H n s 3 attozvwg F. WIERZBOWSKI. FIRE BRICK TRIMMING 0R BEVELING IVIACHINE.

APPLICATION FILED SEPT 71 I920. 1 3 3 6 Patented July 5,1921.

3 SHEETS-SHE 3.

lllllllltllllllllllllllll v F .4. +m K5 FRANK WIEEZBOWSKI, 0F LORAIN, OHIO.

FIRE-BRICK TRIIVIMING 0R BEVELING MACHINE.

Specification of Letters Patent.

Patented July 5, 1921.

Application filed September 7, 1920. Serial No. 408,573.

T 0 all whom it may concern Be it known that I, FRANK WVInRZnoWsKI, a citizen of the United States of America, residing at Lorain, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Fire-Brick,

Trimming or Beveling Machines, of which the following is a specification.

This invention relates to certain new and useful improvements in brick trimming or beveling machines and has particular reference to an improved mechanism for beveling bricks or building blocks so as to properly shape the same for use in the construction of arches and the like.

The primary object of the invention is to provide improved means for supporting bricks at the proper angle to be operated upon by a dressing stone.

Another object of the invention is to provide cooperative mechanism capable of being conveniently and easily manufactured by an operator for supporting and holding bricks in position to be operated upon for surfacing or beveling of the bricks.

Further objects will become apparent as the nature of the invention is better understood and the same consists in the novel, form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like reference characters indicate similar parts throughout the several views,

Figure 1 is a side elevational view of a machine constructed in accordance with the present invention,

Fig. 2 is a view of the device shown in Fig. 1 partially in end elevation and partly broken away to reveal details,

Fig. 3 is a top plan view thereof, partly broken away,

Fig. 4 is a horizontal sectional view taken substantially upon line IV-IV of Fig. 1,

Fig. 5 is a top plan-view of the brick supporting pallet with its clamping means operatively engaging a brick,

Fig. 6 is a fragmentary detail view partly in vertical section and illustrating themechanism for raising and lowering the brick pallet,

Fig. 7 is a fragmentary sectional view of the brick pallet and associated parts and illustrating the action of the riding or dressing stone in beveling a brick,

Fig. 8 is a fragmentary sectional view drawn on a larger scale and illustrating details of the brick clamping mechanism and Fig. 9 is a view looking through the left of Fig. 8.

Referring more in detail to the several views, the present invention embodies a framework substantially rectangular in plan and embodying four corner posts 5 preferably formed of angle iron and rigidly connected in upwardly'converging relation by cross bars 6.

A tubular guide 7 is rigidly supported centrally of the frame in an upright posi tion by suitable intermediate braces 8 and 9 (see Fig. 4:), and a standard 10 is freely movable upwardly and downwardly in this guide. A four-armed spider 11 is rigidly fastened upon the upper end of the standard 10 and has set screws 12 threaded through the ends of the arms thereof so that said set screws 12 supportingly engage the under surface of a brick pallet 13 at the corners of the latter as clearly shown by dotted lines in Fig. 3, the pallet 13 being vertically movable in a guideway formed by angular guides 14: rigidly fastened to the bars 6 at the corners of the pallet 13 as clearly shown in Figs. 1, 3, and 4;. It will be seen that by screwing the set screws 12 upwardly at one side of the machine, the pallet 13 will be supported at an inclination so that the brick 15 will be correspondingly supported for a purpose which will presently become apparent.

Another brace bar 16 connects a pair of the corner guides 1 1 and has the braces 9 rigid therewith as well as being offset as at 17 for the attachment of a brake band 18 thereto. The brake band 18 passes over a friction wheel 19 secured upon a transverse shaft 20 which is journaled in the guides 14; connected by the brace 16, and a pulley 21 is fastened upon one end of said shaft 20 so as to enable power to be applied to said shaft 20 by a belt gearing from any suitable form of motor. A pinion 22 is fastened upon the shaft 20 between the braces 9 and meshes with a spur gear 23 fastened upon a short shaft 24: journaled in the braces 9. A second pinion 25 is fastened upon the shaft 24L and meshes with a second spur gear 26 secured upon a second short shaft 27 journaled in the braces 9. A third pinion 28 is secured upon the shaft 27 and meshes with a .third spur gear 29 secured upon another short shaft 30 journaled in the braces 9, said spur gear 29 being meshed with the rack 31 secured to the standard 10. The brake band 18 overlies the friction wheel 19 and extends downwardly where its lower end is attached to a foot lever 32 which is pivoted at its inner end as at 33 to a suitable part of the frame of the machine. It will thus be seen that when power is applied to shaft 20, the spur gear 29 is caused to rotate through the gearing described at a relatively slow speed for adjusting the standard 10 and the pallet 13 vertically. When the standard 10 has been raised to the desired height, the foot lever 32 is depressed for causing the brake band 18 to engage the wheel 19 so as to hold the shaft 20 against turning, at which time, of course, the belt upon the pulley 21 will slip. The gearing to the spur gear 29 will also serve to continually hold and feed the brake 15 upon the pallet 13 upwardly into contact with the grinding or dressing stone 33 during the operation of the machine as will presently become apparent.

The posts 5 of the machine frame are connected by side rails 34 and 35 forming opposed trackways for the supporting wheels 36 of the reciprocating carriage 37 which carries the brick grinding stone 33, the latter being clamped in the carriage by suitable set screws 38. In order to reciprocate the carriage 37 a pitman 39 is pivotally connected to said carriage as at 40 and to the crank 41 of the crank shaft 42, the latter being provided with loose and fast pulleys 43 and 44 respectively for selective reception of a driving belt 45. It will be seen that when the belt 45 is driven, shaft 42 is rotated and the carriage 37 is reciprocated for passing the stone 33 back and forth over the surface of the brick 15 for beveling the latter as illustrated in Fig. 7 or for surfacing the same as found desirable.

In order to effectively clamp the brick 15 upon the pallet 13, a clamping mechanism is provided including angular end clamping jaws 46 and similar side clamping jaws 47 each of which is provided with a similar means for adjusting the same toward and away from the center of the pallet so as to accommodate bricks of various sizes. Each adjusting mechanism includes a bolt 48 slidably passing through an elongated slot 49 in the pallet 13 and normally depressed by a spring 50 surrounding the bolt and bearing at its upper end upon a washer 51 slidablc on the bolt and upon a washer and nut 52 at its lower end which are fastened upon the lower end of the bolt. The bolt 48 passes upwardly through a correspondingly shaped opening in the aw 46 or 47 and has a pawl 53 pivoted to the upper end thereof. The pawl 53 is provided with a pair of teeth for engagement with the ratchet teeth 54 provided along the opposite longitudinal edges upon the bolt 48 causes the pawl 53 to be pressed into engagement with the teeth 54 by reason of the engagement of the cam 55 with the washer 56, and the clamping jaws are thus effectively held against backing away from the surface of the brick which they engage. A finger piece 57 is provided on the pawl 53 so as to lift the latter against the action of the spring 50 when it is de sired to adjust the jaws.

As will be seen by viewing Figs. 1, 2, and

3, the carriage 37 preferably comprises a rectangular box provided with upwardly diverging arms v58 upon which the wheels 36 are journaled.

It will thus be seen that when the proper dressmg or grinding stone 33 is fastened in the carriage 37 and the brick 15 properly clamped upon the pallet 13, power is applled to shaft 42 for reciprocating the stone 33. At the same time, power is applied to shaft 20 so as to cause the standard 10 to ra se and maintain the upper surface of the brlck 15 in contact with said stone 33 with sufiic ent pressure to insure a grinding or dressing operation. When the adjusting screws 12 are positioned as shown in Fig. 7 with the pallet at an angle to the horizontal, the brick will be beveled as illustrated in said figure so as to be employed for various purposes such as constructing archways and the like.

It is believed that the construction and operation as well as the advantages of the I present invention will be readily understood and appreciated from the foregoing description by those skilled in the art.

Minor changes may be made without departing from the spirit and scope of the in vention as claimed.

What is claimed as new is:

1. In a brick trimming machine of'the class described, a carriage adapted'to have a grinding or dressing stone clamped therein, means to horizontally reciprocate said carriage, a brick supporting pallet, means to elevate said pallet to engage the upper surface of the brick thereon with the stone carried by said carriage, means to adjust said pallet at an angle to the horizontal whereby beveling of the brick may be had, said last named means including a vertically movable standard having a spider fastened upon the upper end thereof, and set screws threaded upwardly through said spider in supporting engagement with the under surface of said pallet.

2. In a brick trimming machine of the class described, a carriage adapted to have a grinding or dressing stone clamped therein, means to horizontally reciprocate said carriage, a brick supporting pallet, means to elevate said pallet to engage the upper surface of the brick thereon with the stone carried by said carriage, means to adjust said pallet at an angle to the horizontal whereby beveling of the brick may be had, and means to clamp a brick upon the upper surface of said pallet including pairs of end and side angle clamping jaws and means to adjust said clamping jaws toward and away from the center of said pallet.

3. In a brick trimming machine of the class described, a brick supporting pallet, means to clamp a brick upon the upper surface of said pallet including pairs of end and side angle clamping jaws, andmeans to adjust said clamping jaws toward and away from the center of said pallet, said adjusting means including a bolt slidable through the clamping jaws and having a pawl pivoted upon the upper end thereof, ratchet teeth upon the upper surface of the pallet, a spring normally urging said bolt downwardly, and operative connections between the pawl and the clamping jaws for maintaining the pawl in engagement with said teeth when the bolt is pulled downwardly by said spring.

In testimony whereof I affix my signature.

FRANK WIEBZBOWSKI. 

